Assessment of soil washing for Zn contaminated soils using various washing solutions

Deok Hyun Moon; Ju-Ry Lee; Mahmoud Wazne; Jeong-Hun Park

Journal of Industrial and Engineering Chemistry, Vol.18, No.2, 822-825, March, 2012

DOI10.1016/j.jiec.2011.11.137 Export Citation

Assessment of soil washing for Zn contaminated soils using various washing solutions

Deok Hyun Moon¹, Ju-Ry Lee², Mahmoud Wazne³, and Jeong-Hun Park^{2, 4, †}

¹Department of Environmental Engineering, Chosun University, Gwangju 501-759, Republic of Korea
²Department of Environmental Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
³Department of Environmental Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA
⁴Soil Technology Research Institute, Chonnam National University, Gwangju 500-757, Republic of Korea

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Bench-scale soil washing experiments were conducted to remove Zn from contaminated soils. Various washing solutions including hydrochloric acid (HCl), nitric acid (HNO3), sodium hydroxide (NaOH), oxalic acid (HOOCCOOHㆍ2H2O), sulfuric acid (H2SO4), phosphoric acid (H3PO4), and tartaric acid (C4H6O6) were used. The concentration of the washing solutions used in this study ranged from 0.1 M to 2 M with a liquid to solid ratio of 10. The soil washing results showed the following order of washing solution decreasing effectiveness for the removal of Zn: HCl > HNO3 > H2SO4 > H3PO4 > C4H6O6 > HOOCCOOHㆍ2H2O > NaOH.

Keywords:Zn;Soil washing;Acid;HCl;Contaminated soil

[References]

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Moon DH, Lee JR, Grubb DG, Park JH, Environ. Earth Sci., 61, 1745 (2010)
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[1] Qian GR, Sun DDL, Tay JH, J. Hazard. Mater., 101(1), 65 (2003)

[2] Mulligan CN, Yong RN, Gibbs BF, Eng. Geol., 60, 193 (2001)

[3] U.S. EPA, Region 2 News and Speeches: EPA to Modify Cleanup Plan for Arseniccontaminated Soil at Superfund Site in Vineland, New Jersey (2001)

[4] U.S. EPA, Treatment Technologies for Site Cleanup, EPA-542-R-07-012, 12th ed., Office of Solid Waste and Emergency Response, Washington, DC (2007)

[5] MOE, The Korean Standard Test (KST) Methods for Soils, Korean Ministry of Environment, Gwachun, Kyunggi, (in Korean)., 225 (2010)

[6] Ko I, Chang YY, Lee CH, Kim KW, J. Hazard. Mater., 127(1-3), 1 (2005)

[7] Wuana RA, Okieimen FE, Imborvungu JA, Int. J. Environ. Sci. Technol., 7(3), 485 (2010)

[8] Elliott HA, Shastri NL, Water Air Soil Pollut., 110, 335 (1999)

[9] ASTM, Annual Book of ASTM Standards, Soil and Rock, vol. 4.08 (2000)

[10] Jang M, Hwang JS, Choi SI, Chemosphere., 66, 8 (2007)

[11] Yang JS, Lee JY, Baek K, Kwon TS, Choi J, J. Hazard. Mater., 171(1-3), 443 (2009)

[12] Moutsatsou A, Gregou M, Matsas D, Protonotarios V, Chemosphere., 63, 1632 (2006)

[13] Moon DH, Lee JR, Grubb DG, Park JH, Environ. Earth Sci., 61, 1745 (2010)

[14] Pourbaix M, Atlas of Electrochemical Equilibria in Aqueous Solutions, National Association of Corrosion Engineering, Houston, TX (1974)